Drilling-machine.



F. STEVENS & F. SPICKER.

DRILLING MACHINE. APPLICATION FiLED JUNE 14: nus.

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DRILLING MACHINE.

APPUCAHON mu) JUNE M. 1915.

lntvntvd Sept. 12, 1916.

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DRILLING MACHINE. APPLICATION HLED JUN-E I4, 1915.

Patented Sept. 12, 1916.

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enlarged. of the machine.

FRANK. STEVENS ARI! FREDERICK SPICKER, OF ROUNDUP, MONTANA DRILLING-MACHINE.-

Specification of Letters Patent. Pate ted Sept. 12, 1916.

' Application filed June 14, 1915. Serial No. 36,913.

7 '0 all whom it may concern:

Be it known thatwe, FRANK Srnvnns and FREDERICK SPIoKEn, citizens of the United States of America, residing at Roundup, in the county of Musselsheli and State of Montana, have invented certain new and useful Improvements in Drilling-Machines, of which the following is a spemfication.

The present invention relates to improvements in drilling machines especially adapted for usein boring Artesian and oil'wells of standard type. The primary object of this invention is to improve in certain details the construction and operation of the drilling machine which is the subject of our Patent No. 1,077,649 patented November 4, 1913, as will be fully set forth hereinafter.

In the accompanying drawings we have illustrated one complete example of the physical embodiment of our invention constructed according to the best mode we have so far devised for the practical application.

of the principles of the invention.

Figure 1 is a side elevation of a portable well drilling machine constructed according Fig. .2 is a top plazi View,

Fig. 3 is a longitudinal vertical sectional View further enlarged of the rope or cable mechanism illustrating in detail our improved construction.

Fig. 4 is a transverse detail sectional view on line 4--4.- of Fig. 3.

The machine is supported upon a portable vehicle or truck including the rectangular frame 1 mounted upon the traction wheels 2, 2, 2, 2, and it will be understood that the machine may be drawn by horse power; orif desired the machine may be driven by its own power for transportation.

The tower 3. which is supported on a pivot 4 of the bracket 5 fixed to the frame,

may be folded back on its pivot when the machine is not in operation, and thus provide for a more facile transportation of the machine. When in operative position as shown in Fig.1, the tower is braced by stroke as readily understood, and this operation of the tool is primarily accomplished through the motor 12 supported at the rear of the machine frame. The motor may be of any suitable or desired type and its driving wheel 13 revolves the fl wheel 14 through the medium of the belt 5. The flywheel is supported on the main shaft or beater shaft 16 which isjournalcd in the bearings 17 on the frame 1.

Through the medium of the main shaft the counter shaft or drum shaft 18 is revolved and the two shafts are geared together by means of the clutch gear 19 and the larger gear wheel 20. The'clutch gear is slidable on the main shaft and co-acts with the fly wheel when the clutch 21 is closed as in Fig. 2. A lever 22 is ivoted on the frame at 23 and provided wit the usual fork 24 and sleeve 25 by means of which the clutch 21 is operated.

Thedrum shaft 18 carries the usual winding drum 26 for the cable or rope 9 and the cable is wound upon this drum when it is revolved from the motorthrough the'just described connections, but when it is desired to hold the rope or cable on the drum, the clutch 21 is of courseopened and the drum gearing and drum remain idle.

In addition to the power mechanism for winding or unwinding the rope or cable on the drum, the'tlrum may be turned manually by an attendant at the front of the drilling machine. Thus if it is desired to revolve and wind the drum only slightly the shaft 18 may be revolved through the medium of the worm wheel 27 on the shaft 18 and the worm gear 28 of the screw bar 29. This bar is supported in brackets 30 and may be turned by means of the hand wheel 31 at the front of the machine.

The fly wheel 14 which is loose on the shaft 16 may be brought into operative relation with the shaft (when not coupled up with the drum gearing) by means of the clutch mechanism 32 actuated by the shift lever 33. In Fig. 2 it will be apparent that the main shaft or beater shaft is made up of two sections having in addition to the two outer bearings 17, a pair of inner bearings 34. 34, on the frame bars 1, and between these two frame bars the adjoining ends of the shaft sections are connected by a pair of rings 35, 35 that are rigidly joined by the crossbar 36 so that the ends of the shaft sections are joined by an inflexible connection thus renderim the shaft 16 rigid throughout its length. lhe cross bar has journaled,thereon a pulley or sheave 37 against which the cable 9 at all times contacts. Thus, when the'beater shaft is revolved to the left in Fig. 3 but to the right in Fig. 2, the pulley rides down the cable 9 and therefore lifts the tool 11 as will be understood. As the beater shaft revolves the pulley 37 is at all times in contact with the cable and the cable is guided between the two rings 35 35. In this mannermany accidents and displacements of the cable are prevented as the two rings confine the cable at alltimes to its proper working position, as the operation of the machine lifts and permits the tool to fall alternately.

In connection with the cable mechanism we employ a tension device for taking up the slack of the cable, and an adjusting de- \'ice by means of which the depth of the stroke of the tool is gaged. The tension device includes a frame 38 pivoted at 39 on the frame bars 1 at the rear of the drum. At their upper ends the sides of the frame are joined by a rod or bar 40 upon which a pulley'or sheave 41 is free to revolve and also free'to move laterally, and over thispulley the rope or cable passes from the drum. The cable passes downwardly from the. pulley 41 and around a. wide roller 42 on the rod or shaft 43 which connects the sides of the frame 38 below the pivot bar 39. The lower end of each side piece of the frame 38 has attached thereto by pivotal connection-a draw bar 44 movable and guided in "a perforated bracket 45 at the underside of "ceases the tension of the spring will take up the slack of the rope by pulling the lower endof the frame 38 to the rigl'it in Fig. 3.

The length of the stroke of the tool is adjusted and determined by the position of the pulley 47 under which the cable passes from the roller 42 to'the sheave 37. This pulley 47 revolves on a short shaft 48, and the shaft 48 is slidable in two parallel slotted brackets 4-9 fixed to the underside of the frame bars 1. A draw bar 50 provided with a bifurcated or forked end 51 is com nected at one end to the shaft and this bar is slidable in the bracket fixed to the frame. At regular intervals on the upper side of the draw bar notch-es 53 are provided and a turn latch 54 pivoted at 55 on the frame is adapted to engage any one of these notches and hold the draw bar in ad justed position. Thus when the latch 54 is lifted' in Fig. 3 the draw bar 53 may be drawn to the left carrying with it the pillley -17 which is guided in its slotted brackets. \Vhen the pulley is drawn to the left in Fig. 3 the length of the stroke of the tool is decreased and when carried to the right 'the length of the stroke is increased.

At the front of the machine we illustrate a drum 5(3 pivoted upon the frame and provided with a friction wheel 57 and a pair of gear wheels-58 and 59. wheels and the drum are supported in the frame 0 and the frame is bodily movable on the pivot (31 so that the friction wheel may be. brought into contact with the inner periphery-of the drive wheel 1-1 and be driven All of these ends of the sectional shaft consistingof a pair of spaced rings concentrically mounted on theshaft ends, a rigid eccentric connection between said rings and a friction wheel on the connection for the rope, and a. m0vable pulley and means for holding saidpulley in adjusted position for adjusting the rope with relation to the friction wheel.

In testimony whereof we affix our signatures in presence of two witnesses.

FRANK STEVENS. FRED SII'CKER.

Witnesses:

V. D. DUsENneRY, Jens R. Bowman. 

